#pragma once
#include "gp_Ax2.h"
#include "gp_Ax1.h"
#include "gp_Pnt.h"

class gp_Ax2;
class gp_Ax1;
class gp_Pnt;
class gp_Trsf;
class gp_Vec;

//!      Describes an ellipse in 3D space. <br>
//! An ellipse is defined by its major and minor radii and <br>
//! positioned in space with a coordinate system (a gp_Ax2 object) as follows: <br>
//! -   the origin of the coordinate system is the center of the ellipse, <br>
//! -   its "X Direction" defines the major axis of the ellipse, and <br>
//! - its "Y Direction" defines the minor axis of the ellipse. <br>
//! Together, the origin, "X Direction" and "Y Direction" of <br>
//! this coordinate system define the plane of the ellipse. <br>
//! This coordinate system is the "local coordinate system" <br>
//! of the ellipse. In this coordinate system, the equation of <br>
//! the ellipse is: <br>
//! X*X / (MajorRadius**2) + Y*Y / (MinorRadius**2) = 1.0 <br>
//! The "main Direction" of the local coordinate system gives <br>
//! the normal vector to the plane of the ellipse. This vector <br>
//! gives an implicit orientation to the ellipse (definition of the <br>
//! trigonometric sense). We refer to the "main Axis" of the <br>
//! local coordinate system as the "Axis" of the ellipse. <br>
//! See Also <br>
//! gce_MakeElips which provides functions for more <br>
//! complex ellipse constructions <br>
//! Geom_Ellipse which provides additional functions for <br>
//! constructing ellipses and works, in particular, with the <br>
//! parametric equations of ellipses <br>
class gp_Elips  {

public:

  

  //! Creates an indefinite ellipse. <br>
      gp_Elips();
  
//!  The major radius of the ellipse is on the "XAxis" and the <br>
//!  minor radius is on the "YAxis" of the ellipse. The "XAxis" <br>
//!  is defined with the "XDirection" of A2 and the "YAxis" is <br>
//!  defined with the "YDirection" of A2. <br>
//! Warnings : <br>
//!  It is not forbidden to create an ellipse with MajorRadius = <br>
//!  MinorRadius. <br>
//!  Raises ConstructionError if MajorRadius < MinorRadius or MinorRadius < 0. <br>
      gp_Elips(const gp_Ax2& A2,const double MajorRadius,const double MinorRadius);
  
//!  Changes the axis normal to the plane of the ellipse. <br>
//!  It modifies the definition of this plane. <br>
//!  The "XAxis" and the "YAxis" are recomputed. <br>
//! The local coordinate system is redefined so that: <br>
//! -   its origin and "main Direction" become those of the <br>
//!   axis A1 (the "X Direction" and "Y Direction" are then <br>
//!   recomputed in the same way as for any gp_Ax2), or <br>
//!  Raises ConstructionError if the direction of A1 <br>
//! is parallel to the direction of the "XAxis" of the ellipse. <br>
        void SetAxis(const gp_Ax1& A1) ;
  //!Modifies this ellipse, by redefining its local coordinate <br>
//! so that its origin becomes P. <br>
        void SetLocation(const gp_Pnt& P) ;
  
//!  The major radius of the ellipse is on the "XAxis" (major axis) <br>
//!  of the ellipse. <br>
//!  Raises ConstructionError if MajorRadius < MinorRadius. <br>
        void SetMajorRadius(const double MajorRadius) ;
  
//!  The minor radius of the ellipse is on the "YAxis" (minor axis) <br>
//!  of the ellipse. <br>
//!  Raises ConstructionError if MinorRadius > MajorRadius or MinorRadius < 0. <br>
        void SetMinorRadius(const double MinorRadius) ;
  //! Modifies this ellipse, by redefining its local coordinate <br>
//! so that it becomes A2e. <br>
        void SetPosition(const gp_Ax2& A2) ;
  //! Computes the area of the Ellipse. <br>
        double Area() const;
  
//!  Computes the axis normal to the plane of the ellipse. <br>
       const gp_Ax1& Axis() const;
  //! Computes the first or second directrix of this ellipse. <br>
//! These are the lines, in the plane of the ellipse, normal to <br>
//! the major axis, at a distance equal to <br>
//! MajorRadius/e from the center of the ellipse, where <br>
//! e is the eccentricity of the ellipse. <br>
//! The first directrix (Directrix1) is on the positive side of <br>
//! the major axis. The second directrix (Directrix2) is on <br>
//! the negative side. <br>
//! The directrix is returned as an axis (gp_Ax1 object), the <br>
//! origin of which is situated on the "X Axis" of the local <br>
//! coordinate system of this ellipse. <br>
//! Exceptions <br>
//! Standard_ConstructionError if the eccentricity is null <br>
//! (the ellipse has degenerated into a circle). <br>
        gp_Ax1 Directrix1() const;
  
//!  This line is obtained by the symmetrical transformation <br>
//!  of "Directrix1" with respect to the "YAxis" of the ellipse. <br>
//! Exceptions <br>
//! Standard_ConstructionError if the eccentricity is null <br>
//! (the ellipse has degenerated into a circle). <br>
        gp_Ax1 Directrix2() const;
  
//!  Returns the eccentricity of the ellipse  between 0.0 and 1.0 <br>
//!  If f is the distance between the center of the ellipse and <br>
//!  the Focus1 then the eccentricity e = f / MajorRadius. <br>
//!   Raises ConstructionError if MajorRadius = 0.0 <br>
        double Eccentricity() const;
  
//!  Computes the focal distance. It is the distance between the <br>
//!  two focus focus1 and focus2 of the ellipse. <br>
        double Focal() const;
  
//!  Returns the first focus of the ellipse. This focus is on the <br>
//!  positive side of the "XAxis" of the ellipse. <br>
        gp_Pnt Focus1() const;
  
//!  Returns the second focus of the ellipse. This focus is on the <br>
//!  negative side of the "XAxis" of the ellipse. <br>
        gp_Pnt Focus2() const;
  
//!  Returns the center of the ellipse. It is the "Location" <br>
//!  point of the coordinate system of the ellipse. <br>
       const gp_Pnt& Location() const;
  //! Returns the major radius of the ellipse. <br>
        double MajorRadius() const;
  //! Returns the minor radius of the ellipse. <br>
        double MinorRadius() const;
  
//!  Returns p = (1 - e * e) * MajorRadius where e is the eccentricity <br>
//!  of the ellipse. <br>
//!  Returns 0 if MajorRadius = 0 <br>
        double Parameter() const;
  //! Returns the coordinate system of the ellipse. <br>
       const gp_Ax2& Position() const;
  
//!  Returns the "XAxis" of the ellipse whose origin <br>
//! is the center of this ellipse. It is the major axis of the <br>
//!  ellipse. <br>
        gp_Ax1 XAxis() const;
  
//!  Returns the "YAxis" of the ellipse whose unit vector is the "X Direction" or the "Y Direction" <br>
//!  of the local coordinate system of this ellipse. <br>
//! This is the minor axis of the ellipse. <br>
        gp_Ax1 YAxis() const;
  
       void Mirror(const gp_Pnt& P) ;
  
//!  Performs the symmetrical transformation of an ellipse with <br>
//!  respect to the point P which is the center of the symmetry. <br>
       gp_Elips Mirrored(const gp_Pnt& P) const;
  
       void Mirror(const gp_Ax1& A1) ;
  
//!  Performs the symmetrical transformation of an ellipse with <br>
//!  respect to an axis placement which is the axis of the symmetry. <br>
       gp_Elips Mirrored(const gp_Ax1& A1) const;
  
       void Mirror(const gp_Ax2& A2) ;
  
//!  Performs the symmetrical transformation of an ellipse with <br>
//!  respect to a plane. The axis placement A2 locates the plane <br>
//!  of the symmetry (Location, XDirection, YDirection). <br>
       gp_Elips Mirrored(const gp_Ax2& A2) const;
  
        void Rotate(const gp_Ax1& A1,const double Ang) ;
  
//!  Rotates an ellipse. A1 is the axis of the rotation. <br>
//!  Ang is the angular value of the rotation in radians. <br>
        gp_Elips Rotated(const gp_Ax1& A1,const double Ang) const;
  
        void Scale(const gp_Pnt& P,const double S) ;
  
//!  Scales an ellipse. S is the scaling value. <br>
        gp_Elips Scaled(const gp_Pnt& P,const double S) const;
  
        void Transform(const gp_Trsf& T) ;
  
//!  Transforms an ellipse with the transformation T from class Trsf. <br>
        gp_Elips Transformed(const gp_Trsf& T) const;
  
        void Translate(const gp_Vec& V) ;
  
//!  Translates an ellipse in the direction of the vector V. <br>
//!  The magnitude of the translation is the vector's magnitude. <br>
        gp_Elips Translated(const gp_Vec& V) const;
  
        void Translate(const gp_Pnt& P1,const gp_Pnt& P2) ;
  
//!  Translates an ellipse from the point P1 to the point P2. <br>
        gp_Elips Translated(const gp_Pnt& P1,const gp_Pnt& P2) const;
    const gp_Ax2& _CSFDB_Getgp_Elipspos() const { return pos; }
    double _CSFDB_Getgp_ElipsmajorRadius() const { return majorRadius; }
    void _CSFDB_Setgp_ElipsmajorRadius(const double p) { majorRadius = p; }
    double _CSFDB_Getgp_ElipsminorRadius() const { return minorRadius; }
    void _CSFDB_Setgp_ElipsminorRadius(const double p) { minorRadius = p; }



protected:




private: 


gp_Ax2 pos;
double majorRadius;
double minorRadius;


};






// other  functions and methods (like "C++: function call" methods)



